Improvement in grain-separators



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EDMUND BURKE, OF vllllOR'I, NEW HAMPSHIRE.

IMPROVEMENT' IN 'GRAIN-SEPARATORS.

`Specification4 forming part of Letters Patent No. 35,4Ql, dated May27,1862.

.'To' aZZ whom t may concern.-

Be it known that 1, GEORGE Laren, of E1- mira, inthe county of Ghernungand State/of New York,l haveinve'nteda new and Improved Grain-Separator;and I do hereby declare'that l thefollowing is a full,`1clear, and exactde# scription of thesanne, reference being had 'to theaccompanyingdrawings, making a part of this specification, nin whichjFigureisa side sectional `view of my invention, taluni-in` th nue w w,Fig. 2. Fig. 2 is aplan or top View of the-same; Fig. 3, an en- ,Iargedsectional view o`f aportion of the saine;

Similarfvletters o1" reference indicate corre-l `spondi'ng parts in theseveral iignresr The object of this invention is to obtain a Amachinebywhich grain may not only be sepa rated from 4all impurities, butdifferent kinds of i grainv separated from each other.

"lo this end the invention-consists in the employment or' use of aseriesof screens fitted within a case provided with a shake motion and withknocking-devices, and usingin connection with said partsra'seriesofblast-spouts arranged in a peculiarfwayand provided with a self-acting/va'lv/e, 'angdjustable gate, .and

refuse-receptacle arranged Vas herenin'after l fully ,shownanddescrihed.

To enable those skilled in theart to fully understand andconstruct myinvention, I will proceed to describe it.

A represents a rectangular bed or' base `on `which the working `partsof-the'machine rest, andB is a box orcasewhich is attached to elasticsupportsyC, and has a shake motion given it by Ineens of a` crank, D,and connecting-rod E, the crank being on a shaft, F,which isi-placed ona suitable frame, G.

Within the box crease B there isfplaced ajseriesof inclined screens, l,2, 3, 4, 5, 6, 1,

and'S, and ascries ot" chutes, 1X,:2X; "3X; and

4*, arranged as shown in Figc'l, the chutes, n which are simply inclinedplatesorboards,A

allinclining downward toward the front end j of the case, and all,with-the exception of the -lower`-one,r4*,l1ead into a vertical spout,H, While the screens incline downward both to-, ward the back andA frontend of the case,- the screens 1H2i`nclining down tdward the front end,`the screen 3 toward the back, the screensV 4 and 5 toward the front, thescreen 6 toward the back, and the screens 7 and Stoward the' front. Thelower chute, 4X, discharges on the screen 7 l y A On the topof 'the boxor case B there is secured a hopper, H', provided atits dischargeorificewith a val-ve, 1 to-regulate the discharge o fgra-in upon the uppermostscreen, .1. The lower end of the spout H communicates with a passage,vl', at the bottom of the box [or case Band. underneath the-lowestscreen, 8, as shown` in Fig. l, and the two lowest screens, 7 and 8,have troughs J J at their `and 5, and the other two against the under I,side bf the chutes 2X and 4K. A knocker, M,

acts against the under side of tliebottoin of the box or :case B, saidknocker being at the end ofa bent lever, N, which has its Fulcrumpinpassing through pendants ax, attached to the box or case, anditsrlowerfend fitted in a fixed arm, e, attached to the bed A. Thisknocker therefore, it will be seen, is operated b'ythe'shakemovement ofthe box or case B.

O O O O represent a series of bars,- which v are placed on shaftsfin thebox or'cs-eBl Thesefshaftsf extend through thebox or case at one end,and each has a cross-bar, g, at-

tached,by w'hich the shafts f are tnrned,to admit of the bars 0 being ina vertical position and in contactwith the two screens, or with a screenand chute, between 4which they are placed. This willbe understood byreferring y to Fig, 3, in which a bar, `O,is shown in tint in ayerticalposition andin contact with a 'screen and chute, and shown inahorizontal position` free from the screen and chute,in red outlThse"barsO, when in a verticalpo` sition,comn1unicate the jar from the screenorchute below themv to the one immediately a suction-blast is generated inabove, cleaning the screens. They are only used, however, when themachine is not in working operation and for the purpose above specified.The knockers, however, are always at work. P isa suetioni'amwhichisinclosed in a case, Q, atthe outer side and lower end of the box K.The case Q, communicates atits ends with the lower part of a verticalspout, 7L, in the box-l. The spouth is provided with a valve, R, whichis hung on a pivot, i, and is allowed to work freely thereon, andagainst the upper end of said valve a pin, j, attached toa lever, S,bears, said lever having-a weight, T, on it, which muy be adj ustedfarther in or out on the lever to regulate thepressure ofthe pinj on thev alve, which opens inward. The upper end of the spout h communicateswith a chamber, U, in the upperpart ofthe box K, and the upper end ofthe spout a also`communicates with said chamber,as well as two spouts,bb, which are parallel with a.h spout a communicates by an inclinedspout, o', with the lower end of thespout b, and the @pours a and bcommunicate with each other by a passage, d, and just below said passagethere is an opening, c', which communicates with the external air. Inthe` lower part of the spout b, just below the spout c', there' is anopening, c, and a simar opening` e', is made in the c, through which thegrain enters into it. y The chamber U extends down between the spoutWand spout Il., and has a door,f, at its lower end,and in the upper partof said chamber there is hung, by an axis,vg, a gate, V, which serves asa sort of valve and extends down below the upper ends of the spouts. Thelower end of the gate has a cord, h', attached to it at each side, andthese cords eX- tend through the box K at one side and serve as a means`for adjusting it either forward or backward, as may be desired.

The fan lJ is driven by a belt, i', from the shaft F, and when themachine is in operation the blastspouts a cb b IL, as indicated by thearrows in Fig. 1. The grain passes from the hopper H upon the uppermostscreen, l, which allows the grain,

cockle, and fine impurities Ato pass through, but excludes the largeforeign substances, which pass olf from the lower or depressed end ofsaid screeninto a spout, j, which discharges said impurities at one sideof the box or case B. The grain falls on screen 2, which allows thecoekleand fine impurities to pass through it,but not the grain. Thecockie and `line impurities are conveyed by the chute 1`^' into thespout H, while the grain passes over screen 2 and is discharged on thehighest end of screen 3, which separates oatsandl other largergrain fromthe smaller'kind-such as wheatwhich passes through screen 3 and falls onchute 2", the large grain passing into spout H, while the chute 25conveys Ithe smaller grain to the screen 4, through which it alsopasses, while any oats or larger grain thanv wheat passes olf andperform an important function inwhich The lower end of they spout c justbelow the-passage the depressed end of the screen 4 into a spout,

7a', and are discharged from the side ofthe case or box B. The grainwhich passes through screen 4 falls upon screen 5 and passes overit andis'conducted to screen G, while the screen 5 admits of fine impuritiespassing through it and falling upon chute 3X, to spout H.I The smallgrain (wheat) passes through sereen, while the large grain (oats,

dac.) passes over4 itinto spout A. The grain passes through screen 6falls on the chute 4X, which conducts it to thescreen 7, over which thelarge wheat passes into the blast-spout a', while the smallerwheat,which 'passes through 7, falls upon screen 8, over which it passesinto the blast-spout u. rl'lie knockers insure the free passage of thegrain over the' screens and chutes, and also insure the efficiency ofthe screening operation. The bars O, however, during the screeningoperation, are not, as previously mentioned, turned vertically, so as totransmit the jar of the knockers to all the screens and chutes, as thejar in that case would be too great. The bars O are only made to serveas a connection for this purpose, in order to clean the meshes'ot'thesoreens after the work of the latter is performed, 'so that they maybe clean fora succeeding operation. The oats and large grain pass off ina spout at the depressed end'or" the passage l, the bottom of whichmaybe perforated to allow the dust and ine impurities to pass throughinto a bag or receptacle prepared to receive it. Thelarge wheat, whichpassesinto the blast-spout a', is subjected to a suction-blast therein,which takes up ne impurities, while the grain in passing down by theopening ex and c is subjected to a crossblast which serves to turn anylong impurities-such as bits of straw and the like--ad cause them to becarried up by the direct blast. This cross-blast .is an importantfeature of the invention, as it effectually prevents the foreignsubstances specified from passing down with the Wheat-y a contingencywhich would be likelyto occur if suffered to be retained in anendwiseposi tion to the blast. The .smaller grain, which passes from screen. 8into the blast-spout a, is subjected to a similar action at the openinge" at the lower end of the spout b. The large wheat is discharged from aside spout, bx, at the lower end of spout L', while the smaller wheat isdischarged from the lower end of the spout b". A

The strength of the suctionblast is regulated by adjusting the weight lon the lever S,- which bears against the valve R, as previouslydescribed, and. all impurities-such as light shrunken grain, Stc-aredeposited in the chamber U, it being designed that they shall drop orfall therein, the suction-blast being regulated to effect that result,while the dust and lightest impurities are drawn into the fanlcase Q and`expelled therefrom by the .action ofthe fau, vent thejcasual grain overthe c The gate V serves to preassage of the light shrunken aniberU, asit gives the blast which conducts it A ber, and by'adj u stingiii-backward toward the f spout b", as shownby `dotted lines," theupward suetiont its forward side .willbe weakened- 'in .consequence 'ofthe area of the upwardrpas Sage being' increased,*and'fthe lightin1puri.

rThis invention feombiynatiou withzthespoutflfpassage I, and knockers L,and M, substantially as and forv the purpose hereinsetifoith';

2. The ladj nstabiebars O, placed' in th V1'-v bratng box or vcase B andarranged with the screens and chutes thereof, s(Hostailiiiail'lym;A

and for thefpur'pose herein set forth."

3. The vcross-blastsI formed ,in the syo'ts a b 4by means of theopenings e* 5e e ,as described', for theprpose set forth.

4. The combination of he spouts a a",vb'"b,

.and -hfwth the Chamber ,fa1 P, adjustable gate V, and selfaetingvalveR. all aranget." asshown, in connectionl with-fthe boxl or case B,containing the screens and"v vehutes, 'as' and "f-GEORGELEACH-f@Witnesses:

Re (rlmrlmr,`

JAMES LAIRD.

